University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

Home	Introduction	History	Plants Data	Classification	Garden Arts	Garden Photos	Credits	Become a Friend

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Genus: Polemonium Species: caeruleum Common Name: Jacob's Ladder Family: Polemoniaceae Order: Ericales Native: Europe and Asia Habit: Herbaceous Perennial Height: 1 to 3 feet Width: 1.5 to 2 feet Flowering Season: Spring Flower Color: Blue or white Propagation: Seed or division Zone: 4-8 Alternate species: P. reptans Note: This clump-forming plant is suitable for woodland gardens, cottage gardens, border fronts, or rock gardens. Cutting back the plant to basal foliage after flowering, will increase the chances for late summer flowering. Excessive exposure to direct sun light, and dry soil will cause leaf scorch, and/or tip burn respectively. Monitor plant for slugs and powdery mildew. Prefers partly shady, moderately dry, well-drained, organic-rich soil.